Antiskid device for automobiles



J. GRNROOS.

ANTISKID DEVICE FOR AUTDMOBILES.

APPLICATION FlLED Nov.1o,1919.

1,351,275@ Patentedsept. 7,1920.,

W-jww J. GRNROOS. ANlSKlD DEVICE FOR AUTOMOBILES.

APPLICATION FILED Nov, Io, 1919.

1,351,750. Panmdspt. 7,192@o 2 SHEETS-SHEET 2.

w72 @5565 l /zzaewor (gw/M @M y To all whom may concern:

i rn-Koneaivnoos. or rainrorerHarrison..ioiiio.

ANTISKID DEVICE FOR AUTOMOBILES.

Specification of Letters Patent.

Patented Sept. 7, 1920.

Application led November 10, 1919. Serial No. 332,096.

Be it known that I, JAiion GnNnoos, a citizen of Russia, residing atFairport Harbor, in the county ot Lake and State of Uhio. have inventedcertain new and usey "ful improvements in iintiskid Devicesi'orAutomobiles, roi' which theV following isa speciiication. Y Y

Y This invention relates to improvements in anti-skid devices i'orautomobiles and its object is to irovide adeviceot this Atype that issimp e in construction, cheap to manufacture andV eilicient inoperation. llfith the toregoingvand other objects in view the inventionconsists in the combination and arrangement ot' parts to be hereinafter'fully described,` pointed out in the' appended claim and illustrated inthe accompanying drawings which Jrorm ya part of this speciiication andin which- Figure 1 is a plan view of an automobile equipped with myinvention.

Fig. 2 is a view of Fig. 1 in side elevation. Fig. 3 is a cross sectionthrough the automobile showing the attachment in. two

positions. V Fig. et is an enlarged view of one disk employed.

Fig. 5 is a fragmentary viewillustrating a modied form of footV leverthat maybe employed. v

Like reference characters denote corresponding parts throughout theyseveral views.

Vhile two sets of my anti-skid device may be applied to an automobile Ihave illustrated but one set which under ordinary circumstances will befound efficient in operation. The reference numeral. 1 denotes theautomobile having the usual running board 2 which is to be formed withthe recess 3 to aord clearance for the operation of my device. To theunder surface of the floor of the automobile l secure a plurality ofbrackets 4 arranged in pairs. To ,one pair of brackets t the bell-cranks5 are fulcrumed, each bell-crank comprising a longer and a shorter sideas shown and the vlonger sides of said members being retained yieldinglyin parallel relation by the connecting contractile spring 6, the shortersides of said ybell-cranksv then abutting each other just below the`lower end of the ioot .lever 7 which operates through a perforationinthe cary floor. To another set of brackets 4L a pair oi' rods 8, 9 arepivotally secured and toa third set of brackets a pair of -rods 8,'9aare pivotally secured, the* rods 8f, 9 pivotally supporting a crankshait 10 and the rods 8a, 9@ pivotally supporting another crankshaft 11,each of said crank shafts being provided at its outer end with a` disk12 providedv with a star-plate 13 the points of which plate are adaptedfor engagement with the road in the operative position kof said disks.The rods 8, 9, 8a, 9a are parallel with each other and consequently movein a common plane.

The rod 9 is connected bypitman '14 to onebell-crank 5 and the rod 92Lis connected by pitman 15 to another bell-crank 5. Thel normal positionof my anti-skid mechanism is shown in dotted lines in Fig. 3 in whichposition the mechanism is yieldingly re-' tained by the spring 6, thedisk 12 then being disposed directly beneath the iioor of the automobilein raised position. To

' movethe mechanism into operative position,

shown in Fig. 2 'and in Fig. 8 in full lines, the operator depresses thetoot lever 7 thus causingthe bell-cranks to move'the rods 8, 8a, 9, 9ZLinto vertical position thus moving; 5

the disks 12 outwardly and downwardly until they contact with theground. Any lateral or skid movement of; the automobile will now bearrested by the disks 12and their star-plates 13. When pressure isremoved from the lioot lever the spring 6 will return it and theantiskid mechanism to normal or inoperative position. If preferred afoot 'leverl of the type shown in Fig. 5 may be substituted for the footlever the bell-cranks 5 in the manner-previously described. f What isclaimed is rod of each pairs-of swinging rods, exible `7. In Fig. 5 thebell-crank 16 isconnected to the link 17 that moves through aperforation in the automobile floor and actuate's A95 Y connectionbetween said bell-cranks whereby as my own I `have hereto affixed vmysigna-VY they are yieldingly retained in a predeture in the presence oftwo subscribing WitrV termined position, afoot pedal for actuatingnesses.

Y said belhcranks, a crank shaft'car'ried by JAKOB GRNROOS. i Y 5 eachpairV of swinging rods, and 2L toothed Witnesses: Y Y disk ozuried byeach crank shaft. WUJLIAM HANELIUS,

'In testimony that I claim the foregoing E. DBARBER.-

